In this Dec. 4, 2017, file photo, Houthi Shiite fighters guard a street leading to the residence of former Yemeni President Ali Abdullah Saleh, in Sanaa, Yemen. (AP Photo/Hani Mohammed, File)
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In this Dec. 4, 2017, file photo, Houthi Shiite fighters guard a street leading to the residence of former Yemeni President Ali Abdullah Saleh, in Sanaa, Yemen. (AP Photo/Hani Mohammed, File)
